Review of the mechanical performance of variable stiffness design fiber-reinforced composites

2018 ◽  
Vol 25 (3) ◽  
pp. 425-437 ◽  
Author(s):  
Zhibo Xin ◽  
Yugang Duan ◽  
Wu Xu ◽  
Tianyu Zhang ◽  
Ben Wang
Keyword(s):  
Mechanical Performance ◽  
Variable Stiffness ◽  
Structure Design ◽  
Fiber Reinforced Composites ◽  
Basic Knowledge ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Reinforced Composite ◽  
Stiffness Design ◽  
Research Situation

Abstract Variable stiffness design (VSD) has been paid more attention for its capability of further exploiting the potential of fiber-reinforced composite in composite structure design. VSD under different mechanical property indexes is reviewed in this paper. The review mostly focuses on strength, buckling, frequency, and other more common mechanical indices. Subsequently, the usage of VSD method for several years is briefly summarized. Some successful tests about variable stiffness composite parts are introduced and the experiment results are also addressed. The article summarizes the research situation from both perspectives based on a number of papers about the VSD of composite materials in recent years and provides theoretical reference and basic knowledge to new researchers.

Evaluation of residual strength in the basalt fiber reinforced composites under impact damage

2015 ◽  
Vol 29 (06n07) ◽  
pp. 1540004
Author(s):  
Yun-Hae Kim ◽  
Jin-Woo Lee ◽  
Kyung-Man Moon ◽  
Sung-Won Yoon ◽  
Tae-Sil Baek ◽  
...  
Keyword(s):  
Impact Damage ◽  
Basalt Fiber ◽  
Free Fall ◽  
Structure Design ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Environment Friendly ◽  
Reinforced Composite ◽  
The Impact

Composites are vulnerable to the impact damage by the collision as to the thickness direction, because composites are being manufactured by laminating the fiber. The understanding about the retained strength after the impact damage of the material is essential in order to secure the reliability of the structure design using the composites. In this paper, we have tried to evaluate the motion of the material according to the kinetic energy and potential energy and the retained strength after impact damage by testing the free fall test of the basalt fiber reinforced composite in the limelight as the environment friendly characteristic.

Anisotropic Effective Moduli of Cracked Short-Fiber Reinforced Composites

1999 ◽  
Vol 66 (3) ◽  
pp. 709-713 ◽  
Author(s):  
R. S. Feltman ◽  
M. H. Santare
Keyword(s):  
Short Fiber ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Effective Moduli ◽  
Fiber Reinforced ◽  
Fiber Fracture ◽  
Composite Systems ◽  
Reinforced Composite ◽  
Anisotropic Elastic ◽  
Energy Dissipated

A model is presented to analyze the effect of fiber fracture on the anisotropic elastic properties of short-fiber reinforced composite materials. The effective moduli of the material are modeled using a self-consistent scheme which includes the calculated energy dissipated through the opening of a crack in an arbitrarily oriented elliptical inclusion. The model is an extension of previous works which have modeled isotropic properties of short-fiber reinforced composites with fiber breakage and anisotropic properties of monolithic materials with microcracks. Two-dimensional planar composite systems are considered. The model allows for the calculation of moduli under varying degrees of fiber alignment and damage orientation. In the results, both aligned fiber systems and randomly oriented fiber systems with damage-induced anisotropy are examined.

Study of the Crack Propagation for Particles Reinforced Composite Materials with Different Inclusion Distribution

2012 ◽  
Vol 461 ◽  
pp. 338-342 ◽  
Author(s):  
Da Zhao Deng ◽  
Ji Xiang Luo
Keyword(s):  
Composite Materials ◽  
Crack Propagation ◽  
Engineering Application ◽  
Reference Value ◽  
Voronoi Cell ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Reinforced Composite ◽  
Inclusion Distribution

Based on the Voronoi cell finite element can also reflect fiber reinforced composites interface to take off the layer and matrix crack propagation of the new cell (X-VCFEM cell)[1]. Combined with the re-mesh strategy and grid dynamic technology, Simulated analysis in different inclusion distribution, interface crack propagation for fiber reinforced composites, the results show that for the model with multiple Voronoi cell, The horizontal tension was the largest; For only a Voronoi cell, The size of the horizontal tension was little change.The result was very important reference value for manufacturing process and engineering application of fiber reinforced composite materials.

scholarly journals Nondestructive Inspection of Thin Basalt Fiber Reinforced Composites Using Combined Terahertz Imaging and Infrared Thermography

2016 ◽  
Vol 2016 ◽  
pp. 1-13 ◽  
Author(s):  
Przemyslaw Lopato ◽  
Grzegorz Psuj ◽  
Barbara Szymanik
Keyword(s):  
Infrared Thermography ◽  
Basalt Fiber ◽  
Nondestructive Inspection ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Fusion Algorithm ◽  
Fiber Reinforced Composite ◽  
Dynamic Level ◽  
Reinforced Composite

The inspection of thin basalt fiber reinforced composite materials was carried out using two nondestructive methods: terahertz time domain imaging and infrared thermography. In order to combine the information about the defects arising in examined materials the inspection results were parametrized. In order to acquire more information content, new approximation based features are proposed. Then, a knowledge extraction based multivariate analysis of preselected features’ vector was carried out. Finally, in order to integrate features distributions of representing different dynamic level of information, a multiresolution wavelet based data fusion algorithm was applied. The results are presented and discussed.

Research on the Application of Fiber-Reinforced Composite Materials on Sports Equipments

2014 ◽  
Vol 687-691 ◽  
pp. 4244-4247 ◽  
Author(s):  
Lun Li ◽  
Huang Jing
Keyword(s):  
Composite Materials ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite ◽  
Climbing Wall ◽  
Wall Materials ◽  
Materials Used ◽  
Equipment Performance

Composite materials help to improve the needs of all types of sports equipment performance and lightweight. In recent years, composite materials used in the race bike, a variety of bats, climbing wall materials and other aspects have made new progress. In this paper introduces the composites and the characteristic of fiber-reinforced composite materials and indicate several examples about fiber reinforced composites in sports equipment applications.

Biocomposites - State of the Art

2014 ◽  
Vol 657 ◽  
pp. 397-401
Author(s):  
Dragos Hodorogea
Keyword(s):  
Materials Science ◽  
Mechanical Performance ◽  
Natural Fiber ◽  
Fiber Type ◽  
Industrial Applications ◽  
Green Technology ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Plant Fibers

Due to ecological and sustainability constraints, in late years we see great achievements in green technology in the field of materials science. The development of high-performance biocomposites (made from natural resources) is increasing worldwide. The challenge in working with natural fiber reinforced composites is the large spectrum of possibilities for making them.Biocomposites properties are influenced by a number of variables, including the fiber type, environmental conditions (where the plant fibers are sourced), processing methods, and any modification of the fiber. It is well known that recently exists a large interest in the industrial applications of composites containing biofibers reinforced with biopolymers. The characteristics of reinforcing fibers used in biocomposites, including source, type, structure, composition, as well as mechanical properties, will be reviewed. The variety of biocomposite processing techniques as well as the factors (moisture content, fiber type and content, coupling agents and their influence on composites properties) affecting these processes will be discussed.Techniques for processing the natural fiber reinforced composites will be discussed based on thermoplastic matrices (compression molding, extrusion, injection molding, and thermoforming), and thermosets (resin transfermolding, sheet molding compound). Their influence on mechanical performance (tensile, flexural and impact properties) will be evaluated. Finally, the work will conclude with recent developments and future trends of biocomposites.

Effect of Water Absorption Rates on Fracture Toughness of Sisal Textile Fiber Reinforced Composites

2005 ◽  
Vol 297-300 ◽  
pp. 213-218 ◽  
Author(s):  
Yang Bae Jeon ◽  
Do Won Seo ◽  
Jae Kyoo Lim
Keyword(s):  
Fracture Toughness ◽  
Water Absorption ◽  
Mechanical Performance ◽  
Natural Fiber ◽  
Natural Fibers ◽  
Compact Tension ◽  
Polymer Matrices ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced

Using natural fibers that are inexpensive, lightweight and biodegradable, as the reinforcement for composites is difficult due to their poor interfacial properties between hydrophilic fiber and hydrophobic polymer matrices. It is necessary to evaluate fracture toughness of natural fiber reinforced composites according to water absorption rates to improve mechanical performance of those. In this study, compact tension fracture test was conducted to evaluate fracture toughness with the various specimens. The value of fracture toughness has the tendency to decrease as water absorption rate increases. And different surface treatment methods and different polymer matrices have influence on the value of fracture toughness.

scholarly journals Local Stress Fields in A Unidirectional Fiber-Reinforced Composite with A Non-Homogeneous Interphase Region: Solution

1992 ◽  
Vol 1 (3) ◽  
pp. 096369359200100 ◽  
Author(s):  
K Jayaraman ◽  
K L Reifsnider
Keyword(s):  
Solution Method ◽  
Local Stress ◽  
Fiber Reinforced Composites ◽  
Stress Fields ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Fiber Reinforced Composite ◽  
Unidirectional Fiber ◽  
Interphase Region ◽  
Reinforced Composite

Attention has been focused recently on the interphase in continuous, unidirectional fiber-reinforced composites. In this study, the interphase region is modeled as a non-homogeneous, orthotropic material with continuously varying properties. A previously proposed solution method is used to determine the local stress fields in the constituents - the fiber, interphase and matrix - and the results are presented.

scholarly journals Mechanical Properties of Banana Fabric and Kenaf Fiber Reinforced Epoxy Composites: Effect of Treatment and Hybridization

2019 ◽  
Vol 8 (10) ◽  
pp. 1870-1874
Keyword(s):  
Mechanical Properties ◽  
Natural Fiber ◽  
Fiber Composite ◽  
Fiber Reinforced Composites ◽  
Synthetic Fiber ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Kenaf Fiber ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite

Nowadays, Natural Fiber Reinforced composites (NFCs) are emerging to be a good substitute for synthetic fiber reinforced composites as NFCs have many advantages such as low density, high specific strength, recyclability, low cost and good sound abatement quality etc. Among all types of NFCs, a vast study has been done on banana fiber and kenaf fiber reinforced composite. However, only limited work has been done on the banana fabric, kenaf fiber reinforced composite and the effect of their hybridization on mechanical properties. In this paper, an attempt has been made to study the mechanical properties of the banana fabric, kenaf fiber and hybrid banana fabric/kenaf fiber reinforced composites. Effect of alkali treatment on kenaf fiber reinforced composite is discussed in the paper. For the present work, plain-woven banana fabric and randomly oriented kenaf fiber are used as reinforcement while the epoxy resin is used as a matrix. samples are fabricated using hand lay-up and vacuum bagging method. Curing is done at ambient temperature (250C-300C) for 48h. Tensile, impact and hardness test has been performed on a specimen according to ASTM standards. Improvement in mechanical properties is observed after alkali (6% NaOH) treatment on kenaf fiber reinforced composite. Tensile testing behavior of randomly oriented kenaf fiber composite has been studied using Finite element method and results are compared with experimental investigations. This topic present big potential because it seeks to find solution for sustainable development with environmental concerns.

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